A museum wholly devoted to juvenescence.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

The second oldest anatomical theater is housed in a museum of curiosities.

Ancient burial grounds of the wealthy.

This lake-bound geographical marker sits at the point where three European countries intersect.

Flamboyant architecture from the turn of 20th century.

Largest island in the Baltic Sea experiences such idyllic weather that roses bloom in the middle of December.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Home to drunken tower-climbing goats... seriously.

A beautiful South Korean gate and garden in Little Rock honors American Taekwondo.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

By day this New Orleans square is for pedestrians, but by night it is a kingdom of kittens.

This quirky curiosity shop takes its cues from the world's bazaars.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

This tin chapel was built by POW's during World War II and is painted to look like something much more grand.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

This scale model of our solar system hid in plain sight for years before a physics team sought out all the planets.

This abandoned Slovenian military barracks has become a punky-political art squat.

This one-time health resort was used by aristocrats around the world.